diff --git a/homeassistant/components/discovergy/config_flow.py b/homeassistant/components/discovergy/config_flow.py
index 05ed90bf354..f24fdd1e43d 100644
--- a/homeassistant/components/discovergy/config_flow.py
+++ b/homeassistant/components/discovergy/config_flow.py
@@ -11,12 +11,7 @@ from pydiscovergy.authentication import BasicAuth
 import pydiscovergy.error as discovergyError
 import voluptuous as vol
 
-from homeassistant.config_entries import (
-    SOURCE_REAUTH,
-    ConfigEntry,
-    ConfigFlow,
-    ConfigFlowResult,
-)
+from homeassistant.config_entries import SOURCE_REAUTH, ConfigFlow, ConfigFlowResult
 from homeassistant.const import CONF_EMAIL, CONF_PASSWORD
 from homeassistant.helpers.httpx_client import get_async_client
 from homeassistant.helpers.selector import (
@@ -57,35 +52,14 @@ class DiscovergyConfigFlow(ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
-    _existing_entry: ConfigEntry
-
-    async def async_step_user(
-        self, user_input: dict[str, Any] | None = None
-    ) -> ConfigFlowResult:
-        """Handle the initial step."""
-        if user_input is None:
-            return self.async_show_form(
-                step_id="user",
-                data_schema=CONFIG_SCHEMA,
-            )
-
-        return await self._validate_and_save(user_input)
-
     async def async_step_reauth(
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        self._existing_entry = self._get_reauth_entry()
-        return await self.async_step_reauth_confirm()
+        return await self.async_step_user()
 
-    async def async_step_reauth_confirm(
-        self, user_input: dict[str, Any] | None = None
-    ) -> ConfigFlowResult:
-        """Handle the reauth step."""
-        return await self._validate_and_save(user_input, step_id="reauth_confirm")
-
-    async def _validate_and_save(
-        self, user_input: Mapping[str, Any] | None = None, step_id: str = "user"
+    async def async_step_user(
+        self, user_input: Mapping[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Validate user input and create config entry."""
         errors = {}
@@ -106,17 +80,17 @@ class DiscovergyConfigFlow(ConfigFlow, domain=DOMAIN):
                 _LOGGER.exception("Unexpected error occurred while getting meters")
                 errors["base"] = "unknown"
             else:
+                await self.async_set_unique_id(user_input[CONF_EMAIL].lower())
+
                 if self.source == SOURCE_REAUTH:
+                    self._abort_if_unique_id_mismatch(reason="account_mismatch")
                     return self.async_update_reload_and_abort(
-                        entry=self._existing_entry,
-                        data={
-                            CONF_EMAIL: user_input[CONF_EMAIL],
+                        entry=self._get_reauth_entry(),
+                        data_updates={
                             CONF_PASSWORD: user_input[CONF_PASSWORD],
                         },
                     )
 
-                # set unique id to title which is the account email
-                await self.async_set_unique_id(user_input[CONF_EMAIL].lower())
                 self._abort_if_unique_id_configured()
 
                 return self.async_create_entry(
@@ -124,10 +98,10 @@ class DiscovergyConfigFlow(ConfigFlow, domain=DOMAIN):
                 )
 
         return self.async_show_form(
-            step_id=step_id,
+            step_id="user",
             data_schema=self.add_suggested_values_to_schema(
                 CONFIG_SCHEMA,
-                self._existing_entry.data
+                self._get_reauth_entry().data
                 if self.source == SOURCE_REAUTH
                 else user_input,
             ),
diff --git a/homeassistant/components/discovergy/strings.json b/homeassistant/components/discovergy/strings.json
index 9a91fa92dc4..b626a11ea1e 100644
--- a/homeassistant/components/discovergy/strings.json
+++ b/homeassistant/components/discovergy/strings.json
@@ -6,12 +6,6 @@
           "email": "[%key:common::config_flow::data::email%]",
           "password": "[%key:common::config_flow::data::password%]"
         }
-      },
-      "reauth_confirm": {
-        "data": {
-          "email": "[%key:common::config_flow::data::email%]",
-          "password": "[%key:common::config_flow::data::password%]"
-        }
       }
     },
     "error": {
@@ -21,6 +15,7 @@
     },
     "abort": {
       "already_configured": "[%key:common::config_flow::abort::already_configured_account%]",
+      "account_mismatch": "The inexogy account authenticated with, does not match the account needed re-authentication.",
       "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]"
     }
   },
diff --git a/tests/components/discovergy/test_config_flow.py b/tests/components/discovergy/test_config_flow.py
index 470ef65fccd..23c4a0f7cee 100644
--- a/tests/components/discovergy/test_config_flow.py
+++ b/tests/components/discovergy/test_config_flow.py
@@ -20,7 +20,7 @@ async def test_form(hass: HomeAssistant, discovergy: AsyncMock) -> None:
         DOMAIN, context={"source": SOURCE_USER}
     )
     assert result["type"] is FlowResultType.FORM
-    assert result["errors"] is None
+    assert result["errors"] == {}
 
     with patch(
         "homeassistant.components.discovergy.async_setup_entry",
@@ -51,7 +51,7 @@ async def test_reauth(
     config_entry.add_to_hass(hass)
     init_result = await config_entry.start_reauth_flow(hass)
     assert init_result["type"] is FlowResultType.FORM
-    assert init_result["step_id"] == "reauth_confirm"
+    assert init_result["step_id"] == "user"
 
     with patch(
         "homeassistant.components.discovergy.async_setup_entry",
@@ -60,7 +60,7 @@ async def test_reauth(
         configure_result = await hass.config_entries.flow.async_configure(
             init_result["flow_id"],
             {
-                CONF_EMAIL: "test@example.com",
+                CONF_EMAIL: "user@example.org",
                 CONF_PASSWORD: "test-password",
             },
         )
@@ -111,3 +111,30 @@ async def test_form_fail(
     assert result["type"] is FlowResultType.CREATE_ENTRY
     assert result["title"] == "test@example.com"
     assert "errors" not in result
+
+
+async def test_reauth_unique_id_mismatch(
+    hass: HomeAssistant, config_entry: MockConfigEntry, discovergy: AsyncMock
+) -> None:
+    """Test reauth flow with unique id mismatch."""
+    config_entry.add_to_hass(hass)
+
+    result = await config_entry.start_reauth_flow(hass)
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    with patch(
+        "homeassistant.components.discovergy.async_setup_entry",
+        return_value=True,
+    ):
+        configure_result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                CONF_EMAIL: "user2@example.org",
+                CONF_PASSWORD: "test-password",
+            },
+        )
+        await hass.async_block_till_done()
+
+        assert configure_result["type"] is FlowResultType.ABORT
+        assert configure_result["reason"] == "account_mismatch"